-98.88% is the change from 625 to 7
Calculation steps:
[( 7 - 625 ) ÷ 625] x 100 = -98.88%
Formula
Percentage change = [(7 - 625) / 625] x 100
Subtract the new number by the original number
7 - 625 = -618
-618 ÷ 625 = -0.9888
-0.9888 x 100 = -98.88%
Example